醗酵乳酸の利用に関する研究 (第9報) : 乳酸フーゼルについて : (1) 醗酵乳酸とフーゼル油の反応

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Fusel lactate was produced by the reaction of fermentation lactic acid with fesel oil.1) Fusel oil containved 22.2% of ethyl, 4.7% of n-propyl, 15.2% of i-butyl, 3.0% of n-butyl, 53.1% of i-amyl alcohols and 2.7% of residue.2) Fusel oil was pretreated by the following procedures prior to react with fermentation lactic acid.Procedure 1. Fusel oil was treated with fermentation lactic acid without any pretreatment.Procedure 2. After the water contained in the fusel oil was withdrown as enough as possible, the fusel oil was once fractionated by distillation at 100℃. Each of two fractions thus obtained was treated with fermentation lactic acid.Procedure 3. Fusel oil after water-withdrawal was rectified, and each alcohol fraction was treated with fermentation lactic acid independently.It came to the conclusion that Procedure 1 was most satisfactory.3) Reaction mixture of Procedure 1 was composed of 1 M. of 60% lactic acid, 200 g. of fusel oil and 1.5 ml. of H_2SO_4. The yield was 87%. The compositions of ester fractions obtained by distilling the reaction mixture at the following temperature ranges were : 150〜160℃.(ethyl), 2.1%;160〜170℃.(n-propyl), 4.2%;170〜180℃.(i-butyl), 6.3%;180〜190℃.(n-butyl), 14.4%;190〜200℃. (i-amyl), 52.1%; and above 200℃., 17.5%. It is notable that the last fraction, which would be probably composed of polylactate ester, was 17.5%.
社団法人日本生物工学会の論文
1956-07-15